Band-tightener



.s. c. CARY A-ND v. RAe0NA.

BAND TIGHTENER.

APPLICATION FILED MAR. 51, I918. RENEWED HOV. 7,1919. 1,367,121.

Patented Feb. 1, 1921.

INVEIQTORS ATTORNEY UNITED STATES PATENT OFFICE.

srnncnn c. CARY AND VINCENT RAGONA, or BROOKLYN, NEW YORK, ASSIGNORS TO CARY MANUFACTURING COMPANY, OF BROOKLYN, NEW YORK, A CORPOBA- TION 0]? NEW YORK.

BAND-TIGHTENER.

Application filed. March 9, 1918, Serial No. 221.570. Renewed November 7, 1919. Serial No. 336,471.

To all whom it may concern:

VINCENT RAGONA, both citizens of the United States, and residents of the city of New York, borough of Brooklyn, countyof Kings, and State of New York, have invented a certain new and useful Band- Tightener, of which the following is a specification.

This invention is. an implement for stretching a binder, tie or band around a shipping package of one form or another, such as a box, case, shook, crate, etc.

Among the objects of the invention are, first, to facilitate the operationofinitially engaging the implement with the binder or tie preliminarily to stretching the latter around the shipping package; second, to stretch the hinder or tie while it remains in contact with the surface of the package, thereby obviating slack in said blnder or tie upon the removal of the implement, third, to operate each gripper by means located conveniently to the attendant and thus dispense with the manipulation of sepa-';

rate parts, such as detachable wedges;

fourth, to secure such engagement between the gripper and the binder or tie that the latter cannot slip through the gripper when the implement is manipulated for applying tension to said binder sufficiently to compress the boards or slats into tight contact with end members of the shipping package,

and, finally. to simplify the construction, 1n-

crease the efficiency and render the imple-.

ment economical to manufacture.

Generally speaking, the invention embodles a 'plurahty of heads, a screw splndle operable for effecting a relative movement between said heads, and grippers carried by said heads, each gripper being novel in construction.

Other features and advantages of the invention will appear from the following detailed description taken in connection with the drawings, whereina 1 Figure 1 isa plan view illustrating the stretching tool or implement applied in an operative position upon ashipping package i for the purpose of tightening the major por- Be it known that we, SPENCER (l. GAnr and tion of a hinder or tie into tight contact with the boards or slats thereoff Fig. 2 is a crosssection on an enlarged scale and in the plane indicated by the dotted line 2 -2 of Fig. 1.

Fig. 3 isa cross section in the plane of the dotted line 3&3 of Fig. 2, illustrating one of the grippers.

The implement shown in the drawings embodies in its construction heads A, B, a guide rod C, and a screw spindle D. The heads A and B are similar in construction, each being preferably cast in a single piece.

Each head is enlarged at a a and provided.

being made fast with the head B by a pin .d or other suitable means.

The rod fits loosely 1n the opening 5 of the head A, said rod C cotiperating with the spindle D in retaining the heads A and B in parallel rela tion. Said spindle D is provided with two screw threads, one being a right-hand thread and the other a left-hand thread, and

said threaded parts of the spindle engage with the threads in the openings 6 of the heads A and B, whereby rotative movement of the spindle imparts traveling movement order to effect relative movement between the heads. The spindle I) is provided at one end portion with a suitable operating means, such as the hand crank d.

Patented Feb. 1, 1921.

simultaneously to the heads A and B in l The under side of each head adjacent to the ears 0 o is formed with a ledge constituting afixed aw E which extends across the space between the ears 0 c, the exposed face of saidfixed jaw E being toothed or serrated, as indicated at e in Fig. 2.

Coiiperating with each head A and B is a movable jaw F,- the same consisting of a plement is adapted to rest.

plate of hardened metal of a size to fit snugly in the space between the ears 0, 0. The movable jaw is positioned in opposing or facing relation to the fixed jaw E, and to adapt'said movable jaw to operate'ei'ficiently in gripping the wire the lower edge portion of said jaw is grooved at f and toothed or serrated at f. Said jaw F is attached to the head with which it is vassociated, preterably by means of a pin 9 which connects the upper part of the jaw pivotally to the G, one term of which is shown in Fig. 2 as a.

" 'coiled springhoused within an opening it oi lthe head A 'or B p one endportion of said spring belng received in a recess it provided in the corresponding movable aw F. The

grippers formed by the jaws E and F of the two heads A and B are adapted to be closed 7 upon the hinder or tie by the action of cam levers I, the same being attached to the heads A and B and extending outwardly therefrom so asto be within convenient reacli of the operator. v ach part 1 is formed with a cam head 2' which is ositioned in the space hetweenthe ears C, said cam head being provided with acam surface i adapted for frictional contact with the movable aw F. The cam head is pivoted to and between the ears 0. c by a cross pin j, and unitary with this cam head is a handle j,.it being preferred to make the cam head and the handle in one piece. v

The implement is adapted to be placed upon a shipping package, as indicated in Fig. 1 alt- L, so that said implement can be engaged with a binder O while the latter remains in contact with said package L. With the jaws E and F of the two grippers pressed open by the springs G, heads A. and B of v the implement will receive the end portions of the binder between the serrated faces ef ofsaid aws, whereby the end portions 50f the binder O are adapted to be engaged by the grippers without lifting the binder from contact with the package for an appreciable distance. The operator should press down on the handles of the 'cam levers I for the purpose of moving. the jaws F toward the jaws E, and'thus the two grippers engage tightly with the binder 0 so as to leave the end portions of the binder tree or unconfined between'the heads A and B, asillustrated in Figi l. With the grippers tightly engaged with the, hinder the operator proceeds to apply rotative movement to the screw spindle the binder in order that the latter will be drawn tightly upon the shipping package and in a manner to compress the slats or boards of said package into engagement tightly with the end members of said package; in fact, the binder can be drawn so tightly upon the soft wood of the package as to embed said binder into the material ol the package, as indicated at 0 in Fig. l. \Vith the implement operated to draw the binder tightly, the end portions of said binder are manipulated easily and freely by the operator and without relaxing tension upon the major part of the binder, for the reason that the end portions are free and loose between the heads A and B, as shown in Fig. 1. The loose end portions of the binder are anchored to the shipping package by suitable means, one form of said anchoring means being a seal P indicated in the upper part of Fig. 1. The operation oil? l'lkStCDiIlg' the binder having been completed, the operator now nninipulates the levers I I to release the gripping jaws trom the binder. whereupon the tool or implement is lifted from contact with the case so that it can be re-used in fastening the other binder to the package.

Having thus fully described the invention. what we claim as new and desire to secure by Letters Patent is:

1. A device of the class described embodying a plurality of heads, means for imparting relative movement thereto, and grippers carried by the heads for engagement with a hinder or tie while the latter is in contact with a shipping package, each gripper embodying a fixed jaw, a movable aw, and a with a hinder or tie lying beneath said device, each gripper comprising a fixed jaw, a movable jaw, and a cam lever separate from said movable jaw and contacting therewith, said cam levers being movable on axes extending parallel to the faces of the gripping jaws and at a right angle to the median line of the head by which the gripper is carried.

3. A device of the class described embodying a plurality of heads each provided with gripper-supporting ears and with a fixed lllrality of heads each provided at an end portion with spaced ears and on its underside with a fixed jaw, combined with a movable jaw pivoted to said ears of each head, a ca n lever pivoted to said ears of each head and positioned for contact with said movable jaw, each cam lever being separate from said movable jaw and said cam lever being movable on an axis extending parallel to the faces of said jaws and at a right angle to the median line of the head, means for separating said jaws, and means for imparting relative movement to said heads.

5. A device adapted to rest upon a shipping package for stretching a hinder or tie embodying a plurality of heads each pro vided at one end with. spaced ears and with a jaw extending between said ears, movable jaws pivoted to the ears, said first and second named jaws being positioned to open relatively to the underside of each head, cam levers pivoted to the ears of said heads and extending outwardly therefrom into accessible positions, each cam lever being separate from the movable jaw with which it coacts and being movable on an axis extending parallel to the faces of said movable aw and at a right angle to the longitudinal axis of the head, said cam levers cooperating with the movable jaws, and means for effecting relative movement between the heads.

6. A device adapted to rest upon a shipping package for stretching a binder or tie embodying a plurality of heads each pro vided at one end with spaced ears and with a jaw extending between said ears, movable jaws pivoted to the care, said first and sec ond named jaws being positioned to open relatively to the underside of each head, springs acting against the movable jaws for normally separating the latter relatively to the movable jaws, cam levers pivoted to the ears, and means for effecting a relative movement between the heads.

7. A device adapted to rest upon a shipping package for stretching a binder or tie embodying a plurality of heads each provided at one end with spaced ears and with a jaw extending between said ears, movable jaws pivoted to the ears, said first and sec ond named jaws being positioned to open relatively to the underside of.,each head,

fixed jaws, and meansfor effecting relative movement between said heads, eachgcam lever being separate from the movablejaw with which it coaots and being movable on an axis extending parallel to the faces of said movable jaw and at a right angle to the longitudinal axis of the head. i

8. In a device of the class described, means for gripping a binder embodying a head provided with a fixed jaw, amovable jaw pivoted to said head and positioned in cooperative relation to the fixed aw, a spring for opening the movable jaw relatively to the fixed jaw, and a cam lever coiiperating with said movable jaw, said cam lever being pivoted to the head separately from the movable jaw and said cam lever being movable on an axis extending parallel to the faces of the jaws and at a right angle to the longi tudinal axis of the head.

9. Ina band stretching device, a cross head provided with a gripping face positioned substantially at a right angle to the longitudinal axis of said cross head, a movable jaw pivoted to saidcrosshead for move ment on an axis extending approximately parallel to the plane of said gripping face,

said. movable jaw being provided with a,

gripping face in opposing relation to the gripping face of the crosshead, means for moving the pivoted jaw relatively to the gripping face of the crosshead, and a cam lever separate from the crosshead, said cam lever being fulcrumed on the crosshead in a position for actuating the movable jaw.

10. In a band stretching device, thecom' bination of a plurality of crossheads each provided with a gripping face the plane of which is substantially perpendicular to the longitudinal axis of said crosshead, a plurality of movable jaws, one of said jaws being pivoted to each crosshead and said jaw being provided with a gripping face in opposing relation to the gripplng face of the crosshead, said gripping faces of'the crossheads and of the jaws being normally separated at the face of the stretching de vice adapted to rest into contact with a pack age to be bound, a plurality of cam levers, one to each crosshead, said cam lever being fulcrumed to the crosshead for movement on an axis positioned approximately parallel to the plane of the gripping faces, a guide rod cooperating with the crossheads, and a screw for imparting movement to said crossheads. j

11. In a band stretching device, the combination of a pluralityof crossheads each of which is bifurcated and provided within said bifurcation with a gripping face the plane of which is substantially perpendicularto thev longitudinal axis of said crosshead, .a plurality of movable jaws one of Which is positioned Within the bifurcation of-each'crosshead, each jaw being pivoted to said crosshead, an incased spring acting to press each movable jaw with respect to the gripping face of thecrosshead, and a plurality of cam levers, each pivoted within the 10 bifurcation of one crosshead and positioned for contact with one of said movable jaws.

In testimony whereof we have hereunto signed our names this 8th day of March. 1918.

SPENCER G. (JAR-l VINCENT RAGONA. 

